diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c
--- a/sys/kern/vfs_cache.c
+++ b/sys/kern/vfs_cache.c
@@ -332,7 +332,8 @@
     "char *");
 SDT_PROBE_DEFINE1(vfs, namecache, symlink, alloc__fail, "size_t");
 
-SDT_PROBE_DEFINE3(vfs, fplookup, lookup, done, "struct nameidata", "int", "bool");
+SDT_PROBE_DEFINE3(vfs, fplookup, lookup, done, "struct nameidata *", "int",
+    "enum cache_fpl_status");
 SDT_PROBE_DECLARE(vfs, namei, lookup, entry);
 SDT_PROBE_DECLARE(vfs, namei, lookup, return);